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Wintertime survey of LF field strengths in Japan
Author(s) -
Wakai Noboru,
Kurihara Noriyuki,
Otsuka Atsushi,
Imamura Kuniyasu,
Takahashi Yukio
Publication year - 2006
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2005rs003344
Subject(s) - field (mathematics) , sky , meteorology , computational physics , remote sensing , environmental science , physics , geology , mathematics , pure mathematics
A nationwide survey for measuring field strengths at 40 and 60 kHz was carried out in the winter months of 2004 to estimate the service area of the standard frequency and time signals. The data obtained were analyzed in comparison with the resultant field strengths of sky waves and the ground wave which were predicted using a method developed by one of the authors. Good agreement was seen between the measured and predicted field strengths.